[Bob La Londe]

I think I have found the point of diminishing returns.

24 shots from 882-903-883. Its a little lower than I was hoping for, but its pretty darn good. I was hoping for about the same spread 10FPS faster. This is an average of 895, and an extreme spread of only 21. SD is 6. That's a little high for the competitive target shooters, but the middle of that string shows less speed variation than my regulated .177.

The setup is 7 -1/4 turns of hammer throw (6-1/4 compared to stock) and preload adjuster just bumped off zero so its on the spring and not on the end of the threads.

1 882 3000 PSI
2 887
3 893
4 891
5 894
6 897 From here to ...
7 898
8 898
9 902
10 902
11 900
12 903
13 901
14 902
15 903
16 900
17 899
18 899
19 895
20 896 ... here looks really good.
21 894
22 890
23 887
24 883 2300 PSI

I definitely think I could regulate at 2400 PSI and get a loooooooooong string at 900 FPS. I'm done working on this gun for a while. Dan, I want to thank you for this valve setup. I didn't do it exactly like you did, but close. I only bored the center of the valve out to 29/64, and I stopped a little short to make sure I didn't damage the valve seat.

I am sure there are guys shooting better powerful strings, but I am pretty happy with this one. I won't change anything until I am ready to spend more money on the gun. It will probably be a while.

FMI: Previous string was 896,905,906-908-903,897,897,895,898,893,890 for 16 w/ 900 AVG, ES 18, SD 5.
3000-2350. 6-3/4 turns striker
(5-3/4 compare to stock)

String before was more powerful at 6-1/4 turns with 19 shots at 902-907-886. Average of 901, ES 21, SD 5. This is the tune I would probably use for target shooting as 1-14 was 902-907-902 and very steady from shot to shot.